"""a=1
def x1(x):
    y=(x+2/x)/2
    return y
for i in range(10):
    x2=x1(a)
    a=x2
    print(a,x2)


def x(a,b):
    if a>1:
        a-=1
        x(a,b)
        print(1,a,b,end=" ")
    print(2,a,b,end=" ")
x(6,3)

a=[1]
print(1)
def x(a):
    b=[1]
    y=len(a)
    z=y
    print(1,end=" ")
    while y>0:
        y-=1
        if y==0:
            b.append(1)
            print(1)
        if y>0:
            b.append(a[z-y]+a[z-y-1])
            print(a[z-y]+a[z-y-1],end=" ")
    return b
for i in range (10):
    a=x(a)

a=27
while a!=4:
    if a%2==0:
        a=a/2
    if a%2==1:
        a=3*a+1
    print(a)

e=[]
f=[]
a=(input(""))
b=(input(""))
c=[len(a),len(b)]
while c[0]!=0:
    c[0]-=1
    e.append(a[len(a)-c[0]-1])
while c[1]!=0:
    c[1]-=1
    f.append(b[len(b)-c[1]-1])

    pygame.draw.rect(screen,(0,0,0),(0,95,300,10),0)
    pygame.draw.rect(screen,(0,0,0),(0,195,300,10),0)
    pygame.draw.rect(screen,(0,0,0),(95,0,10,300),0)
    pygame.draw.rect(screen,(0,0,0),(195,0,10,300),0)

a=input("")
b=input("")
w=[[],[]]
s1=[[],[],[]]
s2=[[],[],[]]
if 'x' in a:
    w1=a.index('x')
    w[0].append(w1)
if 'y' in a:
    w1=a.index('y')
    w[0].append(w1)
if '=' in a:
    w1=a.index('=')
    w[0].append(w1)
if 'x' in b:
    w1=b.index('x')
    w[1].append(w1)
if 'y' in b:
    w1=b.index('y')
    w[1].append(w1)
if '=' in b:
    w1=b.index('=')
    w[1].append(w1)
w2=w[0][0]
if w2==0:
    s1[0].append(1)
else:
    s1[0].append(a)
print(a,b,w,s1,s2)
a1,a2,a3,a4,b1,b2,b3,b4=2,'+',2,10,4,'+',2,14


a1=int(input("?x"))
a2=input("")
a3=int(input("?y"))
a4=int(input("=?"))
b1=int(input("?x"))
b2=input("")
b3=int(input("?y"))
b4=int(input("=?"))


print(f"{a1}x{a2}{a3}y={a4}")
print(f"{b1}x{b2}{b3}y={b4}")
def x1(a):
    if a=='+':
        return(1)
    if a=='-':
        return(2)
a2=x1(a2)
b2=x1(b2)
c1=b1/a1
d1,d3,d4=c1*a1,c1*a3,c1*a4
if a2+b2==2 or a2+b2==4:
    d1,d3,d4=-1*d1,d3*-1,-1*d4
    if a2==1:
        a2=2
    else:
        a2=1

if a2+b2==3:
    e3=d3+b3
    e4=d4+b4
if e3!=1:
    e4=(1/e3)*e4
    e3=(1/e3)*e3

e1=(a4-a3*e4)/a1
print(a1,a2,a3,a4,b1,b2,b3,b4,c1,d1,d3,d4,e1,e3,e4)
print(f"x={int(e1)},y={int(e4)}")


a=input("")
b=input("")
n=0


if 'x'in a:
    w1=a.index('x')
x1=int(a[:w1])
if '='in a:
    w1=a.index('=')
z1=int(a[w1+1:])
if 'y'in a:
    w1=a.index('y')
y11=a[:w1]
if 'x'in y11:
    w1=y11.index('x')
y1=int(y11[w1+1:])


if 'x'in b:
    w1=b.index('x')
x2=int(b[:w1])
if '='in b:
    w1=b.index('=')
z2=int(b[w1+1:])
if 'y'in b:
    w1=b.index('y')
y21=b[:w1]
if 'x'in y21:
    w1=y21.index('x')
y2=int(y21[w1+1:])


x=(z1*y2-y1*z2)/(x1*y2-y1*x2)
y=(z1*x2-x1*z2)/(y1*x2-x1*y2)

if x%1!=0:
    xx1=(z1*y2-y1*z2)
    xx2=(x1*y2-y1*x2)
    n=1
if y%1!=0:
    yy1=(z1*x2-x1*z2)
    yy2=(y1*x2-x1*y2)
    n=1
if n==1 or n==0:
    print(x,y)
"""
"""
elif n==1:
    if xx2*(xx1//xx2)>xx1:
        print(f"x={xx1//xx2}+{xx2*(xx1//xx2)-xx1}/{-xx2},y={yy1}/{yy2}")
    if xx2*(xx1//xx2)<=xx1:
        print(f"x={xx1//xx2}+{xx2*(xx1//xx2)+xx1}/{-xx2},y={yy1}/{yy2}")

10,-3,40,3
-4-2/3
2/3
-3x-4-10"""

"""
=((B3*E2-B2*E3)*(B4*C3-B3*C4)-(E3*B4-B3*E4)*(B3*C2-B2*C3))/((B3*A2-B2*A3)*(B4*C3-B3*C4)-(B4*A3-B3*A4)*(B3*C2-B2*C3))
=((A3*E2-A2*E3)*(A4*C3-A3*C4)-(A4*E3-A3*E4)*(A3*C2-A2*C3))/((A3*B2-A2*B3)*(A4*C3-A3*C4)-(A4*B3-A3*B4)*(A3*C2-A2*C3))
=((A3*B2-A2*B3)*(A4*E3-A3*E4)-(A3*E2-A2*E3)*(A4*B3-A3*B4))/((A3*B2-A2*B3)*(A4*C3-A3*C4)-(A3*C2-A2*C3)*(A4*B3-A3*B4))



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=((A3*E2-A2*E3)*(A4*B3-A3*B4)-(A4*E3-A3*E4)*(A3*B2-A2*B3))/((A3*C2-A2*C3)*(A4*B3-A3*B4)-(A4*C3-A3*C4)*(A3*B2-A2*B3))
"""
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